MPEG Tutorial

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Macroblock Skip In I-pictures, all macroblocks are coded and there are no skipped macroblocks In P-pictures, the skipped macroblock is defined to be a macroblock with a reconstructed motion vector equal to zero and no DCT coefficients. In B-pictures, the skipped macroblock is defined to have the same macroblock type as the prior macroblock, differential motion vectors equal to zero (use the motion vector predictor as its motion vector), and no DCT coefficients.
Block Layer DC: Predictive coding – dct_dc_size_luminance – dct_dc_differential AC: Run–Length coding – dct_coeff_first – dct_coeff_next
Page 1 and 2: MPEG-1 MPEG is short for the ‘Mov
Page 3 and 4: Motion Estimation Motion Estimatio
Page 5 and 6: Motion Compensation (conti.) Codin
Page 7 and 8: Bitstream Structure Sequence Layer
Page 9 and 10: Video Sequence Layer
Page 11 and 12: GOP Layer I,P,B three type of pict
Page 13 and 14: Display-Order Decoding-Order Decod
Page 15 and 16: Slice Layer Macroblock Line (Slice
Page 17: Macroblock - consisted of coded_blo
Page 21 and 22: Motion Predictor Reset The current
Page 23 and 24: Baseline: Requirement - MPEG I, IP,
Page 25: Any questions? Thank you The End

MPEG Tutorial

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